Sickle-adjuster



(No Model.)

R. J. ROBINSON & O. F. COLLINS.

SIGKLB ADJUSTBR.

No. 480,754. Patented June 24, 1890.

FI G 1 mit 1 rwiwl lrwllumn w i 1,' plz/7i@ NO-"7gg onlffo'foj', I R

1 mi 4 W'u www@ @h F UNITED STATES PATENT OFFICE.

ROBERT J. ROBINSONAND OYRUS F. COLLINS, OF LINNEUS, MISSOURI.

SlCKLE-ADJUSTER.

SPECIFICATION forming part of Letters Patent No. 430,754, dated June 24, 1890.

Application led March 5 1890l Serial No. 342,792. (No model.)

To a/ZZ whom it may concern:

Be it known that we, ROBERT J. ROBINSON and CYEUsF. COLLINS, citizens of the United States, residing at Linneus, in the county of of Linn and State of Missouri, have invented a newand useful Roller-Sickle Adjuster, of which the following is a specification.

This invention relates to cutting apparatus for harvesters, and is Inore particularly a roller-sickle adjuster adapted to be used on the nger-bar in rear of the knife-bar.

The object of the present invention is to provide a veryT simple means for guiding the said rod in its reciprocation and reducing to a minimum the friction thereon. This object we accomplish by our improved guard,which consists of a block of malleable iron carrying a friction-roller journaled near its front edge, and which block is suitably and adjustably connected to the iinger-bar, all as will be V more fully described hereinafter, and illustrated in the accompanying drawings, in which- Figure lis a top plan, and Fig. 2 a bottom plan, of a harvester-bar with our improved guide attached thereto. Figs. 3 and 4 are respectively a front and a side view of the guide removed and on an enlarged scale. Fig. 5 is a cross-section on the line 5 5 of Fig. l.

Heretofore the bar carrying the knives has been guided by guides having anti-friction rollers above, below, and in rear of `such bar, the above being our own inventions; but we are not aware that a guide has been constructed with the details that the present one possesses, whereby the upper and lower rollers are dispensed with and yet all the necessary guiding action is given the rod.

Referring to the said drawings, B designates the finger-bar carrying the guards G and suitably supported by the harvester-machine, as will be clearly understood.

R designates the reciprocating knife-bar carrying the knives L, which play within grooves in the guards G in amanner also well understood.

Coming now to the present invention, l is a rod connecting the guards G and standards in a plane below the knives L, and this rod, with the front edge of the iinger-barB, forms a slot 2, in which the knife-bar R plays back and forth. The rod l also braces the guards against lateral play and keeps the parts rigidly in proper relative position.

3 designates our improved guide, whose body has rearwardly-extending ends 4, provided with slots 5, by means of which it is bolted to the upper side of the finger-bar B, and may be adjusted forward as the knifebar R wears, to take up all lost motion. At the center of its front edge the guide 3 has a forwardly-proj ecting tongue 5', which passes over the knife-bar R when the parts are in proper position, and beneath which said rod slides freely. This tongue prevents the knife-bar R from rising as it reciprocates in its slot 2, and it is provided in its length with a transverse groove 6, beneath which pass the heads of the rivets or bolts 7, that fasten the knives L to the knife-bar R, all as clearly shown in the accompanying drawings.

Projecting downwardly from the body of the guide 3 at points aboutbeneath the sides of the tongue 5 at its rear end are arms S, which fit in a notch 10 in the front edge of the finger-bar B, and their lower ends are united, as at 8', and continued forwardly by an independent tongue or' lip 9, that is se cured in place by the pin l2 and passes under the knife-bar R, carrying the knives L, above which said rod slides freely. Afriction-roller ll is mounted upon a pin l2, which is seated at its ends above and below the roller in the united portion S of the arms 8, and in the tongue 5 as shown, and this roller bears against the rear edge of the knife-bar R, whereby the latter is pressed forward against the rod l and the resistance offered in the act of mowing and kept in its proper position. The entire guide is preferably cast in one piece, except, of course, thelip 9, thepin, and the roller, and can be applied to and removed from the cutter-bars of harvesters now on the market with but very slight changes in their structure.

XVe claim as the salient points of our in vention:

l. In a harvester cutting apparatus, the combination, with the reciprocating knife-bar R and the nger-bar B, having a notch 10 in its front edge, of the guide 3, bolted upon ICO the upper face of said finger-bar, a tongue 5', extending from the upper face of said guide over the knife-bar R, arms 8, extend ing downwardly from said guide and itting the notch in the finger-bar B, and anti-friction roller 11, pivoted on a vertical pin 12 between said-arms, said rollerbearing against the rear edge of the knife-bar R, as and for the purpose set forth.

2. In a harvester cutting apparatus, the combination, with the reciprocating knife-bar R and the finger-bar B, having a notch l0 in its front edge, of the guide 3, adjustably secured to the upper face of said nger-bar, a tongue 5, extending from the upper face of said guide over the knife-bar R, arms 8, extending downwardly from said guide through the notchin the inger-bar, a lip 9, connected to the lower ends of said armsand extending forwardly therefrom, a pin l2, connecting said tongue and lip, and a friction-roller ll, journaled on said pin between said arms, said roller bearing against the rear edge of the knife-bar R, as and for the purpose set forth.

3. In a harvester cutting apparatus, the combination, with the reciprocating knifebar R, of the guide 3, bolted upon the upper face of the finger-bar, a tongue 5,extending from the upper face of said guide over the knife-bar R, arms 8, extending downwardly from said guide, a lip 9, extending forwardly from said arms below said knife-bar, and an anti-friction roller ll, pivoted on a vertical pin l2 between said arms, said roller bearing againstl the rear edge of the knife-bar R, as and for the purpose set forth.

4. The guide 3, made .of a single piece, and comprising the body adapted to be bolted upon the upper face of the finger-bar, the tongue 5 extending from the upper face of said body, arms 8, extending downwardly from said guide and united, vas at 8', and an anti-friction roller 1l, pivoted, between said arms 8, the whole adapted for use substan# tially as set forth.

In testimony that we claim the foregoing` as4 our own we have hereto aftxed oursignatures in presence of two witnesses.

ROBT. J. ROBINSON. OYRUS F. COLLINS.

Vitnesses:

J. W. NORTHCOTT, C. S. HOMAR. 

